| /* |
| * ==================================================================== |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| */ |
| package org.apache.http.examples.nio.client; |
| |
| import java.io.File; |
| import java.util.concurrent.Future; |
| |
| import org.apache.http.HttpResponse; |
| import org.apache.http.HttpStatus; |
| import org.apache.http.client.ClientProtocolException; |
| import org.apache.http.entity.ContentType; |
| import org.apache.http.impl.nio.client.CloseableHttpAsyncClient; |
| import org.apache.http.impl.nio.client.HttpAsyncClients; |
| import org.apache.http.nio.client.methods.ZeroCopyConsumer; |
| import org.apache.http.nio.client.methods.ZeroCopyPost; |
| |
| /** |
| * This example demonstrates how HttpAsyncClient can be used to upload or download files |
| * without creating an intermediate content buffer in memory (zero copy file transfer). |
| */ |
| public class ZeroCopyHttpExchange { |
| |
| public static void main(final String[] args) throws Exception { |
| CloseableHttpAsyncClient httpclient = HttpAsyncClients.createDefault(); |
| try { |
| httpclient.start(); |
| File upload = new File(args[0]); |
| File download = new File(args[1]); |
| ZeroCopyPost httpost = new ZeroCopyPost("http://localhost:8080/", upload, |
| ContentType.create("text/plain")); |
| ZeroCopyConsumer<File> consumer = new ZeroCopyConsumer<File>(download) { |
| |
| @Override |
| protected File process( |
| final HttpResponse response, |
| final File file, |
| final ContentType contentType) throws Exception { |
| if (response.getStatusLine().getStatusCode() != HttpStatus.SC_OK) { |
| throw new ClientProtocolException("Upload failed: " + response.getStatusLine()); |
| } |
| return file; |
| } |
| |
| }; |
| Future<File> future = httpclient.execute(httpost, consumer, null); |
| File result = future.get(); |
| System.out.println("Response file length: " + result.length()); |
| System.out.println("Shutting down"); |
| } finally { |
| httpclient.close(); |
| } |
| System.out.println("Done"); |
| } |
| |
| } |